We'll move to the arms race at America's theme parks. As we head into the summer, rides are becoming a spine-tingling, hair-raising experience more than ever. And we've been checking them out and we're joined by Susan from Maryland. Reporter: Good morning to you. I'm on a mission to fine the king of the coasters, best of the new rides. And all I can say the competition is making me down right dizzy. Soaring speeds, dramatic inclines. There's no taming these towering titans of steel. This summer, thrill-seekers set to stomach the most extreme twists and turns in history. As American theme parks take adrenaline junkies up to new heights and down steeper slopes. Theme parks today are benefitting from new technology each year. Ten years from now, who knows what they'll have. We have pushed our limits. Reporter: The newest, biggest and baddest rides taking over the nation? The drop of doom coming to six flags great adventure this June rising to an unprecedented 415 feet, only to rocket back to Earth at 90 miles per hour. And in Kansas City, the world's tallest water slide is set to shoot four fatherless raft riders down 17 stories at highway speeds a drop taller than niagara falls. Not all that is tall is terrifying take the new capital wheel in Washington, D.C., capturing a never before seen view of Washington. The view is amazing. But don't look down if you're afraid of heights, because it's a glass floor. Reporter: And if you want to ride in style make sure to get the vip car with leather seat, an HDTV and even a champagne chiller. All of them nice touches, take the edge if, Dan and bianna, if you happen to be afraid of heights as I was. I would need an iv drip. The odds of getting on the drop of doom, zero. And paying for it. Ron, would you do xdthat? Absolutely not. No way. No, no, no, no. He will take a global selfie, we did take a selfie, we'll post it later. It will be seen.

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